We never experienced anything else in Prabhupada's presence other than that bubbling desire to give Krishna. And that's what captured our hearts, and that's what makes us want to make this life successful by doing something to make Prabhupada smile. And if some day we can become so blessed to be able to do that which he wants us to do, then that's the only reason why we live in this world. There is nothing else.
Vyasa puja journal, Jan 2010, pg 59